package com.sky.service.impl;

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONArray;
import com.alibaba.fastjson.JSONObject;
import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.context.BaseContext;
import com.sky.dto.*;
import com.sky.entity.*;
import com.sky.exception.AddressBookBusinessException;
import com.sky.exception.OrderBusinessException;
import com.sky.exception.ShoppingCartBusinessException;
import com.sky.mapper.*;
import com.sky.result.PageResult;
import com.sky.service.OrderService;
import com.sky.utils.HttpClientUtil;
import com.sky.utils.WeChatPayUtil;
import com.sky.vo.OrderPaymentVO;
import com.sky.vo.OrderStatisticsVO;
import com.sky.vo.OrderSubmitVO;
import com.sky.vo.OrderVO;
import com.sky.websocket.WebSocketServer;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.core.annotation.Order;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.math.BigDecimal;
import java.time.LocalDateTime;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

@Service
public class OrderServiceImpl implements OrderService {

    @Autowired
    private OrderMapper orderMapper;
    @Autowired
    private OrderDetailMapper orderDetailMapper;
    @Autowired
    private AddressBookMapper  addressBookMapper;
    @Autowired
    private ShoppingCartMapper shoppingCartMapper;
    @Autowired
    private WeChatPayUtil weChatPayUtil;
    @Autowired
    private UserMapper userMapper;
    @Autowired
    private WebSocketServer webSocketServer;

    @Value("${sky.shop.address}")
    private String shopAddress;

    @Value("${sky.baidu.ak}")
    private String ak;

    private Orders orders;

    @Override
    @Transactional
    public OrderSubmitVO submit(OrdersSubmitDTO ordersSubmitDTO) {

        //处理各种业务异常（地址簿为空，购物车数据为空）
        AddressBook addressBook = addressBookMapper.getById(ordersSubmitDTO.getAddressBookId());
        if (addressBook == null){
            throw new AddressBookBusinessException(MessageConstant.ADDRESS_BOOK_IS_NULL);
        }

        //检查用户的收货地址是否超出配送范围
        checkOutOfRange(addressBook.getCityName() + addressBook.getDistrictName() + addressBook.getDetail());
        //查询用户购物车数据
        Long userId = BaseContext.getCurrentId();
        ShoppingCart shoppingCart = new ShoppingCart();
        shoppingCart.setUserId(userId);
        List<ShoppingCart> byDishIdOrSetmealId = shoppingCartMapper.getByDishIdOrSetmealId(shoppingCart);

        if(byDishIdOrSetmealId == null || byDishIdOrSetmealId.size() == 0){
            throw new ShoppingCartBusinessException(MessageConstant.SHOPPING_CART_IS_NULL);
        }
        //向订单表插入1条数据
        Orders orders = new Orders();
        BeanUtils.copyProperties(ordersSubmitDTO,orders);
        orders.setOrderTime(LocalDateTime.now());
        orders.setPayStatus(Orders.UN_PAID);
        orders.setStatus(Orders.PENDING_PAYMENT);
        orders.setNumber(String.valueOf(System.currentTimeMillis()));
        orders.setPhone(addressBook.getPhone());
        orders.setConsignee(addressBook.getConsignee());
        orders.setUserId(userId);
        orders.setTablewareNumber(ordersSubmitDTO.getTablewareNumber());
        this.orders = orders;

        orderMapper.insert(orders);
        //向订单明细表插入n条数据
        List<OrderDetail> orderDetails = new ArrayList<>();
        for (ShoppingCart cart : byDishIdOrSetmealId) {
            OrderDetail orderDetail = new OrderDetail();
            BeanUtils.copyProperties(cart,orderDetail);
            orderDetail.setOrderId(orders.getId());
            orderDetails.add(orderDetail);
        }
        orderDetailMapper.insertBatch(orderDetails);
        //清理当前用户购物车数据
        shoppingCartMapper.deleteByUserId(userId);
        //封装VO对象
        OrderSubmitVO orderSubmitVO = OrderSubmitVO.builder()
                .id(orders.getId())
                .orderNumber(orders.getNumber())
                .orderAmount(orders.getAmount())
                .orderTime(orders.getOrderTime())
                .build();
        return orderSubmitVO;
    }

    /**
     * 订单支付
     *
     * @param ordersPaymentDTO
     * @return
     */
    public OrderPaymentVO payment(OrdersPaymentDTO ordersPaymentDTO) throws Exception {
        // 当前登录用户id
        Long userId = BaseContext.getCurrentId();
        User user = userMapper.getById(userId);

//        //调用微信支付接口，生成预支付交易单
//        JSONObject jsonObject = weChatPayUtil.pay(
//                ordersPaymentDTO.getOrderNumber(), //商户订单号
//                new BigDecimal(0.01), //支付金额，单位 元
//                "苍穹外卖订单", //商品描述
//                user.getOpenid() //微信用户的openid
//        );

          JSONObject jsonObject = new JSONObject();
          jsonObject.put("code", "ORDERPAID");


//        if (jsonObject.getString("code") != null && jsonObject.getString("code").equals("ORDERPAID")) {
//            throw new OrderBusinessException("该订单已支付");
//        }


        OrderPaymentVO vo = jsonObject.toJavaObject(OrderPaymentVO.class);
        vo.setPackageStr(jsonObject.getString("package"));
        Integer OrderStatus = Orders.TO_BE_CONFIRMED; //订单状态：待接单
        Integer OrderPaidStatus = Orders.PAID;
        LocalDateTime check_out_time = LocalDateTime.now();
        orderMapper.updateStatus(OrderStatus,OrderPaidStatus,check_out_time,this.orders.getId());


        //通过websocket向客户端推送消息 type orderId content
         Map map = new HashMap();
         map.put("type", 1);  //1表示来单提醒，2表示客户催单
         map.put("orderId", this.orders.getId());
         map.put("content", "订单号：" + ordersPaymentDTO.getOrderNumber());

        String json = JSON.toJSONString(map);
        webSocketServer.sendToAllClient(json);

        return vo;
    }

    /**
     * 支付成功，修改订单状态
     *
     * @param outTradeNo
     */
    public void paySuccess(String outTradeNo) {

        // 根据订单号查询订单
        Orders ordersDB = orderMapper.getByNumber(outTradeNo);

        // 根据订单id更新订单的状态、支付方式、支付状态、结账时间
        Orders orders = Orders.builder()
                .id(ordersDB.getId())
                .status(Orders.TO_BE_CONFIRMED)
                .payStatus(Orders.PAID)
                .checkoutTime(LocalDateTime.now())
                .build();

        orderMapper.update(orders);

//        //通过websocket向客户端推送消息 type orderId content
//        Map map = new HashMap();
//        map.put("type", 1); //1表示来单提醒，2表示客户催单
//        map.put("orderId", ordersDB.getId());
//        map.put("content", "订单号：" + outTradeNo);
//
//        String json = JSON.toJSONString(map);
//        webSocketServer.sendToAllClient(json);
    }

    @Override
    public PageResult getHistoryOrders(Integer pageNum, Integer pageSize, Integer status) {
        // 设置分页
        PageHelper.startPage(pageNum, pageSize);

        OrdersPageQueryDTO ordersPageQueryDTO = new OrdersPageQueryDTO();
        ordersPageQueryDTO.setUserId(BaseContext.getCurrentId());
        ordersPageQueryDTO.setStatus(status);

        // 分页条件查询
        Page<Orders> page = orderMapper.pageQuery(ordersPageQueryDTO);

        List<OrderVO> list = new ArrayList();

        // 查询出订单明细，并封装入OrderVO进行响应
        if (page != null && page.getTotal() > 0) {
            for (Orders orders : page) {
                Long orderId = orders.getId();// 订单id

                // 查询订单明细
                List<OrderDetail> orderDetails = orderDetailMapper.getByOrderId(orderId);

                OrderVO orderVO = new OrderVO();
                BeanUtils.copyProperties(orders, orderVO);
                orderVO.setOrderDetailList(orderDetails);

                list.add(orderVO);
            }
        }
        return new PageResult(page.getTotal(), list);
    }

    @Override
    public OrderVO getOrderDetail(Long id) {
        Orders orders = orderMapper.getById(id);
        Long addressBookId = orders.getAddressBookId();
        AddressBook addressBook = addressBookMapper.getById(addressBookId);
        String address = addressBook.getProvinceName() + addressBook.getCityName() + addressBook.getDistrictName() + "  详细地址：" +  addressBook.getDetail();
        orders.setAddress(address);
        List<OrderDetail> orderDetailList = null;

        if (orders != null) {
            orderDetailList = orderDetailMapper.getByOrderId(id);
        }
        OrderVO orderVO = new OrderVO();
        BeanUtils.copyProperties(orders, orderVO);
        orderVO.setOrderDetailList(orderDetailList);

        return orderVO;
    }

    @Override
    public void cancel(Long id) {
        Integer ordersStatus = Orders.CANCELLED;
        Integer OrderPaidStatus = Orders.REFUND;
        LocalDateTime cancelTime = LocalDateTime.now();
        orderMapper.cancel(id,ordersStatus,OrderPaidStatus,cancelTime);
    }

    @Override
    @Transactional
    public void again(Long id) {
        Orders orders = orderMapper.getById(id);
        orders.setId(null);
        orders.setNumber(String.valueOf(System.currentTimeMillis()));
        orders.setStatus(Orders.PENDING_PAYMENT);
        orders.setPayStatus(Orders.UN_PAID);
        orders.setCheckoutTime(null);
        orders.setOrderTime(LocalDateTime.now());
        this.orders = orders;

        orderMapper.insert(orders);

        List<OrderDetail> orderDetailList = orderDetailMapper.getByOrderId(id);
        for (OrderDetail orderDetail : orderDetailList) {
            orderDetail.setId(null);
            orderDetail.setOrderId(orders.getId());
        }
        orderDetailMapper.insertBatch(orderDetailList);
    }

    @Override
    public PageResult getOrder(OrdersPageQueryDTO ordersPageQueryDTO) {

        PageHelper.startPage(ordersPageQueryDTO.getPage(), ordersPageQueryDTO.getPageSize());
        Page<Orders> page = orderMapper.pageQuery(ordersPageQueryDTO);

        if (page != null && page.getTotal() > 0) {
            List<OrderVO> list = new ArrayList<>();
            for (Orders orders : page) {
                OrderVO orderVO = new OrderVO();
                AddressBook address = addressBookMapper.getNameById(orders.getAddressBookId());
                orders.setAddress(address.getProvinceName()  + address.getCityName() + address.getDistrictName() + "  详细地址：" + address.getDetail());
//                orders.setRejectionReason(orders.getRejectionReason());
                BeanUtils.copyProperties(orders, orderVO);
                List<String> result = orderDetailMapper.getOrderDishes(orders.getId());
                String resultString = result.toString();
                orderVO.setOrderDishes(resultString);
                list.add(orderVO);
            }
            return new PageResult(page.getTotal(),list);
        }
        return new PageResult(0,null);
    }

    @Override
    public OrderStatisticsVO getOrderCountByStatus() {
        Integer countWithWaitingreceived = orderMapper.getOrderCountByStatus(orders.TO_BE_CONFIRMED);
        Integer countWithWaitingSending = orderMapper.getOrderCountByStatus(orders.CONFIRMED);
        Integer countWithSending = orderMapper.getOrderCountByStatus(orders.DELIVERY_IN_PROGRESS);

        OrderStatisticsVO orderStatisticsVO = new OrderStatisticsVO();
        orderStatisticsVO.setToBeConfirmed(countWithWaitingreceived);
        orderStatisticsVO.setConfirmed(countWithWaitingSending);
        orderStatisticsVO.setDeliveryInProgress(countWithSending);

        return orderStatisticsVO;
    }

    @Override
    public void takeOrders(OrdersConfirmDTO ordersConfirmDTO) {
        Long id = ordersConfirmDTO.getId();
        orderMapper.takeOrders(id,orders.CONFIRMED);
    }

    @Override
    public void rejectOrder(OrdersRejectionDTO ordersRejectionDTO) {
        Long id = ordersRejectionDTO.getId();
        String rejectionReason = ordersRejectionDTO.getRejectionReason();
        orderMapper.rejectOrder(id,rejectionReason,orders.CANCELLED,LocalDateTime.now());
    }

    @Override
    public void cancelOrder(OrdersCancelDTO ordersCancelDTO) {
        Long id = ordersCancelDTO.getId();
        String cancelReason = ordersCancelDTO.getCancelReason();
        LocalDateTime cancelTime = LocalDateTime.now();
        orderMapper.cancelOrders(id,cancelReason,cancelTime,orders.CANCELLED);
    }

    @Override
    public void deliveryOrders(Long id) {
        orderMapper.deliveryOrders(id,orders.DELIVERY_IN_PROGRESS);
    }

    @Override
    public void finishOrders(Long id) {
        LocalDateTime finishTime = LocalDateTime.now();
        orderMapper.finishOrders(id,finishTime,orders.COMPLETED);
    }

    @Override
    public void reminder(Long id) {

        Orders order = orderMapper.getById(id);

        if(order == null){
            throw new OrderBusinessException(MessageConstant.ORDER_NOT_FOUND);
        }

        Map map = new HashMap();
        map.put("type",2);//1表示来单提醒 2表示催单
        map.put("orderId",id);
        map.put("content","订单号" + order.getNumber());

        //通过websocket向客户端浏览器推送消息
        webSocketServer.sendToAllClient( JSON.toJSONString(map));
    }

    /**
     * 检查客户的收货地址是否超出配送范围
     * @param address
     */
    private void checkOutOfRange(String address) {
        Map map = new HashMap();
        map.put("address",shopAddress);
        map.put("output","json");
        map.put("ak",ak);

        //获取店铺的经纬度坐标
        String shopCoordinate = HttpClientUtil.doGet("https://api.map.baidu.com/geocoding/v3", map);

        JSONObject jsonObject = JSON.parseObject(shopCoordinate);
        if(!jsonObject.getString("status").equals("0")){
            throw new OrderBusinessException("店铺地址解析失败");
        }

        //数据解析
        JSONObject location = jsonObject.getJSONObject("result").getJSONObject("location");
        String lat = location.getString("lat");
        String lng = location.getString("lng");
        //店铺经纬度坐标
        String shopLngLat = lat + "," + lng;

        map.put("address",address);
        //获取用户收货地址的经纬度坐标
        String userCoordinate = HttpClientUtil.doGet("https://api.map.baidu.com/geocoding/v3", map);

        jsonObject = JSON.parseObject(userCoordinate);
        if(!jsonObject.getString("status").equals("0")){
            throw new OrderBusinessException("收货地址解析失败");
        }

        //数据解析
        location = jsonObject.getJSONObject("result").getJSONObject("location");
        lat = location.getString("lat");
        lng = location.getString("lng");
        //用户收货地址经纬度坐标
        String userLngLat = lat + "," + lng;

        map.put("origin",shopLngLat);
        map.put("destination",userLngLat);
        map.put("steps_info","0");

        //路线规划
        String json = HttpClientUtil.doGet("https://api.map.baidu.com/directionlite/v1/driving", map);

        jsonObject = JSON.parseObject(json);
        if(!jsonObject.getString("status").equals("0")){
            throw new OrderBusinessException("配送路线规划失败");
        }

        //数据解析
        JSONObject result = jsonObject.getJSONObject("result");
        JSONArray jsonArray = (JSONArray) result.get("routes");
        Integer distance = (Integer) ((JSONObject) jsonArray.get(0)).get("distance");

        if(distance > 5000){
            //配送距离超过5000米
            throw new OrderBusinessException("超出配送范围");
        }
    }
}
